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R~1CHO(1mmol)和R~2NH_2(2mmol)在无水THF中于N_2下室温搅拌反应30min,再加入R~3Br(3mmol)及锌粉(3mmol),继续在
R ~ 1CHO (1mmol) and R ~ 2NH_2 (2mmol) were stirred in anhydrous THF at room temperature under N2 for 30min, then R ~ 3Br (3mmol) and zinc powder